The Constitution State

Connecticut's official nickname is "The Constitution State", adopted in 1959 and based on its colonial constitution of 1638-1639 which was the first in America and, arguably, the world. According to Simeon E. Baldwin, a former chief justice of the Connecticut Supreme Court, "never had a company of men deliberately met to frame a social compact for immediate use, constituting a new and independent commonwealth, with definite officers, executive and legislative, and prescribed rules and modes of government, until the first planters of Connecticut came together for their great work on January 14th, 1638."

Source: Wikipedia